Compare 12/21 and 45/50
12/21 is smaller than 45/50
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
12/21 = 12 × 50/21 × 50 = 600/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
45/50 = 45 × 21/50 × 21 = 945/1050 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 600/1050 < 945/1050 or 12/21 < 45/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21 and 45/50 12/21 and 90/50 12/42 and 45/50 36/21 and 45/50 12/63 and 45/50 60/21 and 45/50 84/21 and 45/50